Dark torsion as the cosmic speed-up

TL;DR

This paper proposes a modified teleparallel gravity model that explains the universe's acceleration without dark energy, fitting observational data including supernovae, BAO, and CMB measurements.

Contribution

It introduces a novel modification to TEGR that accounts for cosmic acceleration without dark energy, consistent with standard cosmological phases.

Findings

The model reproduces matter and radiation dominated phases.

Fits well with supernova, BAO, and CMB data.

Provides an alternative explanation for cosmic acceleration.

Abstract

It is shown that the recently detected acceleration of the universe can be understood by considering a modification of the teleparallel equivalent of General Relativity (TEGR), with no need of dark energy. The solution also exhibits phases dominated by matter and radiation as expected in the standard cosmological evolution. We perform a joint analysis with measurements of the most recent type Ia supernovae (SNe Ia), Baryon Acoustic Oscillation (BAO) peak and estimates of the CMB shift parameter data to constraint the only new parameter this theory has.